Perhaps you should try some spelling variations:
4.3 communications » 4.3 communication, 2.3 communication, 1.3 communication
generation wages » generation age, reservation wages, generation rate
technology cost » technology case, technology can, technology choice
cost generation » lost generation, cross generation, coal generation
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
wages space » wages race
space 4.3 » space 3.3, space 2.1, space 3.2
l afrique » en afrique

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology cost generation wages space 4.3 communications _ 4 developpement l afrique.*.